A pellet with charge +Q is centered inside a spherical cavity in a conducting ball. The conducting ball has a charge -2q on it. The cavity in the ball is off-center, as shown in Fig. (a) How much charge resides on the inner surface of the cavity ? (b) Is the charge on the cavity surface distributed uniformly or nonuniformly ? Why ? (c ) How much charge resides on the outer surface of the conducting ball ? (d) Is the charge on the ball's outer surface distribution uniformly or nonuniformly ?

Explanation

(a) -Q, (b) uniformaly, (c ) -q, (d) uniformaly